includes 2 4.0 Ah lithium-ion batteries and an 18V charger
part of the Ryobi 18V ONE+ system of over 260 cordless tools
integrated LED fuel gauge
up to 3X more runtime
https://www.homedepot.com/p/RYOBI-ONE-18V-Lithium-Ion-4-0-Ah-Battery-2-Pack-and-Charger-Kit-PSK006/315424283
